| 摘要 |
PCT No. PCT/JP82/00163 Sec. 371 Date Jan. 5, 1983 Sec. 102(e) Date Jan. 5, 1983 PCT Filed May 12, 1982 PCT Pub. No. WO82/04001 PCT Pub. Date Nov. 25, 1982.The present invention is directed to an arrangement for wire-cut, electric discharge machining in which the charged voltage of a capacitor is applied across a wire electrode and a workpiece and the terminal voltage of the capacitor is controlled to perform electric discharge machining of the workpiece at an increased cutting speed. A capacitor (15) for applying a voltage across a workpiece (16) and a wire electrode (17) for electric discharge machining is charged from a DC power source (11) via a transistor (13) serving as a switching element; a transistor (24) serving as an auxiliary switching element is connected in parallel to the transistor (13); and the terminal voltage of the capacitor (15) is detected to control the transistor (24), by which the terminal voltage of the capacitor (15) is maintained at an intermediate level (H1), lowering the mean working voltage.
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